Sunni sits next to 4 phonetic neighbors — Sunny, Sunniva, and Sonny are the closest matches by sound. Most share Sunni's Old English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sunny, full of sunshine"
"resolute guardian"
"born in June; youthful"
"creative American coinage"
"dark beauty"
"tile maker, roofer"
"singer"
"modern invented name; jay bird + lyn suffix"
"wise river, old river"
"descendant of the dark challenger"
"industrious ruler, work-power"
"of heaven, of the sky"
"powerful worker, home ruler"
"from the king's woodland"
"precious, gem-like"
"eternal ruler, ever-powerful"
"God is gracious, gift of God"
"invented Valyrian fantasy name"
"princess"
"descendant of Madán"
"full of life"
Similar sound: These names share phonetic patterns with Sunni — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Sunni.
Rhythm: Sunni is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.